Your friends are trying to get you help. You've played so much tennis that you are no longer the muscle bear you once were. The first feeling is denial. Then you get mad and lash out.
Then you feel guilty for going off on your buds. After all, they are only concerned for you for Christ's sake.
"Look you fuckers! My pudgy gut couldn't have fit in these swim trunks without the TEN hours of intense tennis cardio each week!"
Okay... I'll consider balancing my extreme tennis regimen with gym workouts starting next week. While I am loving my rare flat stomach, I still want to be WOOFY.